Magnite (MGNI) President Katie Evans Sells Shares After Exercise

What Happened
Katie Seitz Evans, President, Product & Operations of Magnite (MGNI), exercised stock options and sold shares on August 6, 2026. The filing shows she exercised 20,000 options at $5.16/share (cost $103,200) and sold 20,000 shares in an open-market transaction at $24.00/share for proceeds of $480,000. The filing also reports a separate derivative entry for 20,000 shares with $0.00 consideration (see Key Details/footnotes).

Key Details

• Transaction date: 2026-08-06. Open-market sale price: $24.00; sale proceeds: $480,000. Option exercise price: $5.16; exercise cost: $103,200.
• Reported transactions: M (option exercise) — 20,000 acquired @ $5.16; S (open-market sale) — 20,000 disposed @ $24.00; M (derivative disposition) — 20,000 disposed @ $0.00.
• Shares owned after the transaction: not specified in the supplied filing data.
• Footnotes: F1 — Sale executed pursuant to a Rule 10b5-1 trading plan adopted Aug 28, 2025. F2 — Options were fully vested and immediately exercisable. F3 — Options were granted as compensation for services.
• Filing timeliness: Reported on 2026-08-07 for transactions dated 2026-08-06 (no late-filing indication in supplied data).

Context

• Transaction codes: M = option exercise/conversion; S = sale. Here, Evans exercised options and sold shares the same day, consistent with a planned sale under a 10b5-1 trading plan.
• The $0.00 derivative disposition is reported separately in the filing; refer to the official Form 4 for detail (this can reflect net settlement, transfer, or other non-cash disposition).
• These transactions are factual disclosures of insider activity and do not by themselves indicate the insider’s future view of the company.